My Crowntail male ( Who has been super aggressive towards all the females ) has had his fins like bit off...The only thing that I could possibly think of is that the female crowntail he is with bit him...Does anyone know if this is possible and what I can do to fix it. She ate like all of his fins off...

Males and females should not be put together except for spawning purposes. You need to separate them right away. Females can be aggressive too. Melafix is good for torn or damaged fins and open wounds.